I know I'd be taking a risk in not getting a new job by the time I've worked my notice but I really feel like this job is going to break me. I'm a line cook at a local restaurant. I had never really planned to take this route. I'd really like to get on track to something long term. But this job is bleeding me dry. My boss keeps accepting huge catering orders on top of huge banquets on top of tour busses on top of allowing a group of 24 to walk in without a reservation on a very busy Saturday. There is no chain of command, it's just the owner. And she is just so insensitive. If I dare mention anything about how I'm struggling to keep up, she shames me and scoffs as if my struggle couldn't even compare to hers. That may be so, but she is the one who chooses to accept this immense amount of work without being properly staffed to get it all done. I get off work and it's all I can do to shower and go to bed. I feel like I can't take it anymore. I have physical and mental health struggles. Chronic fatigue, to name one. It tends to be difficult at times but my job is making it unamanagable. Furthermore, we're understaffed so she's currently scheduling me for 6 days a week, day shift. I've had little energy for job hunting, but if I get an interview, I'd be highly unlikely to actually be available for it (Sunday being my only day off). The urge to walk out is so strong some days. I feel like I'm one stressful day away from a breakdown.

I've been here just one year, after getting laid off from my last job. I am 24, I feel that I have at least some reasonable work history with my past jobs. I left all of them on good terms. I have a bit of money saved so I feel I could get by for a week or two if I couldn't find another job. I also think if I absolutely couldn't find another job that my current boss would rehire me. I've only been job hunting for a couple weeks now but the fatigue keeps setting in before I can get much done. I need a dang break. So bad. I've been working for 6 years now without ever being able to take time off. I'm exhausted. I feel like I would have much more success if I could just focus more of my energy on job hunting and taking care of my basic needs (many of which are being neglected because I am so fatigued). Would if affect my chances of finding new work?

Tl;dr: feel like my job is gonna break me, want to put in my notice now, before I have another job lined up, worried what this will mean for my future. I don't think I can take much more.